Dynamic signal expander



FIG. 1 is a perspective view of a dynamic signal expander showing my new design;

FIG. 2 is a front elevational view of the signal expander;

FIG. 3 is a side elevational view of the signal expander taken from the right side of FIG. 2, the opposite side of the signal expander being similar in appearance;

FIG. 4 is a top plan view of the signal expander;

FIG. 5 is a bottom plan view of the signal expander; and

FIG. 6 is a rear elevational view of the signal expander. 

The ornamental design for a dynamic signal expander, as shown and described. 